It's not leaking but just cracking, the glass is starting to glass. The location my tank is on the floor and when I changed the water, water got everywhere and obviously it goes to the outlet and almost undeer the refrigerator where that big box of electricity is.The more you move the fish the more it will be stressed and the longer it's going to take your fish to heal. If your tank is leaking it would probably be in the best interest of your fish to get it to another tank before it drains out. And make sure that tank is not leaking onto an outlet.... that's got bad news written all over it. Make sure the parameters are good in the 30 gallon before you move it. That FH will be good in a 30 gallon for a few months before it needs moved. Good luck